I'd say the best bet is to talk to your son and see how he feels. Get some info on the program and see if it will continue what his new teacher started. Or if it offers creative alternatives to completing work. Your son sounds like he thrives in a creative environment. It can't hurt to at least try the program.
Oi! Don't teachers like that 2nd grade one make you want to scream?! My newphew is going through something similar. Only he's having to pay for being related to "bad apples".